From Free60
There are ten sets of pin headers on the board. Enumerating them counterclockwise, starting at the top left, these are:
[edit] J1D2, J2D1, J2D2
| J1D2
| Pin
| Signal
| Description
|
| 1
|
| Unknown
|
| 2
|
| Unknown
|
| 3
|
| Unknown
|
| 4
|
| Unknown
|
| 5
|
| Unknown
|
| 6
|
| Unknown
|
| 7
|
| Unknown
|
| 8
| GND
| Ground
|
| 9
| GND
| Ground
|
| J2D1
| Pin
| Signal
| Description
|
| 1
|
| Unknown
|
| 2
|
| Unknown
|
| 3
|
| Unknown
|
| 4
|
| Unknown
|
| 5
|
| Unknown
|
| 6
| GND
| Ground
|
| J2D2
| Pin
| Signal
| Description
|
| 1
|
| Unknown
|
| 2
|
| Unknown
|
| 3
|
| Unknown
|
| 4
|
| Unknown
|
| 5
|
| Unknown
|
| 6
| GND
| Ground
|
| 7
|
| Unknown
|
| 8
|
| Unknown
|
scheme: http://people.zeelandnet.nl/kbgeldof/j2b1_conn.JPG